Internal regenerative cooler.



E. BEHRINGER.

INTERNAL REGENERATIVE COOLER.

APPLICATION FILED MAY 8.-l9l7.

Patentgd Apr. 2, 1918.

2 SHEETS-SHEET li'IWIIWII WTED STATES PATENT @FFTGE.

EMIL BEHRINGER, 0F BROOKLYN, NEW YORK.

INTERNAL REGENERATIVE COOLER.

To all whom it may concern:

Be it known that I, EMIL BEHRINGER, a citizen of the United States,residing in Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements. in Internal RegenerativeCoolers, of which the following is a specification.

This invention relates to heat exchanging devices or coils, particularlyto regenerative coolers for milk and more particularly to cl bowconnections therefor.

The main object of the invention is to improve generally theconstruction of coolers of this sort.-

Other objects are to provide coolers which may be quickly and easilyassembled, taken apart, and cleaned; which may be constructed of-thinlightweight material and in as many or few sectors, as desired andwhichwill be liquid tight and adapted for contraction and expansion.

7 Another object is to provide an easily assembled cooler comprisingpipes connected by elbow members, the parts of each elbow member beingfirmly held together by means .of a single bolt without the .pipes beingthreaded at all.

These and other objects will appear as the description proceeds; and itis noted that various changes may be made in the con struetion withoutdeparting from the scope ofthe invention as claimed.

In the accompanying drawing, showing by way of example, one of manypossible embodiments of this invention:

Figure'l is a side elevation of a bank of coils fitted with my improvedelbow connection- F fig. 2 is a longitudinal sectional view, partly inelevation, showing, ,on a larger scale, the separated parts of the elbowconnection and cooling tubes;

Fig. 3 is a side elevation, partly in section, showing the elbowconnection and cooling tubes assembled; and

Fig. 1 is a perspective view of one of the heads for supporting thetubes and connec- ,tions.

- The improved cooler comprises outer tubes 10, inner tubes 11concentric therewith and elbow connections 12 all supported by thesupporting heads 14- suitably secured together by shortbolts 15 engagingin the slots Y16 and 18 ,(Fig. 4) ofthe flanges of the heads 14. I A

Specification of Letters Patent.

Patented Apr. 2, 1918.

Application filed May S, 1917. Serial No. 167,181.

The outer tubes 10 arereceived in countersunk openings 19 (Figs. 2 and3) of the,

circular openings 26 of the inner chamber ring 24:, and is renderedliquid tight in such opening 26 by the packing 28 in the countersunkgroove 29 of said opening.

Each outer chamber ring 30 is provided witlra pair of tubularprojections 31 received in'said countersunk grooves 29, and receivingthe ends of the inner tubes 11. The outer face of the outer chamber ring30 is provided with an annular groove 82 in which is received a packing34 and the inner edge of the chamber cap 35, said cap being providedWith acentral opening 36.

The head 1-1- is provided with a central bore 38 surrounded by a deepoutwardly proj ecting boss 39. The inner chamber ring 2 1 is likewiseprovided with a central bore 41-0 surrounded by an inwardly projectingboss etl between which and the boss 39 a packing 42 is pressed. Theouter chamber ring 30 is provided with a central opening 44, surroundedby'an annular shoulder 45. A packiug 48 is disposed against saidshoulder 45.

The outer tubes 10 are provided near their ends with opposed boltengaging lugs 49 engaging the head of a bolt 50 passing through saidcentral bores and central openings and having threaded connection with anut 51 pressing against said packing 4S and holding said rings, saidhead and the outer tubes together. The cap 35 is held in place by theouter nut 52 pressing the packing 54 against the cap as shown. By thisarrangement the parts of the elbow connections are firmly held togetherand to the tubes by a single bolt which insures ease of assembling andtaking apart and economy of construction. I,

It is, of course, understood that instead of thelugs 49, otherequivalents, such as grooves or the like, could be milled or otherwiseprovided on the ends of the outer tubes for engagement by thebolt'heads.i

Leaking of the liquid at the bolt connecions is prevented by thepackings 42, 48 and 54, and the inner chamber 25 and the outer chamber55 are thus rendered liquid tight'at their inner parts.

The lowest head 58 at one end of the lowest outer pipe'lO is made toreceive only one outer and inner tube as i obvious.

Each pile of heads 1s supported on a suitable base 59 (Fi 1).

When it is desired that heat be transferred from one liquid-toanother,-one of the liquids is passed through each tube, suitableconnections being provided at the ends of the coils. The direction ofrelative flow and the relative disposal of the warmer liquid may bedetermined by the circumstances of each case.

' The whole cooler may be easily taken apart for cleaning. It is onlynecessary to remove the nuts 51 and 52 and to slide ofli' the variousparts from the bolt. 50, and separate them as indicated in Fig. 2. Forassembling the cooler, the reverse operation takes place. 7

By providing the slots 16 and 18 (Fig. 4), the'heads may be quicklyassembled or takenjapart, and the slots being placed relative movementbetween the axis of the pipes, permit the heads 14 whenthe pipes expandunequally.

"I claim:-' I

1. In combination, an elbow member providecl with a pair of chambers; apair of outer tubes terminating in one of said chambers; a pair of innertubes passing through said outer tube and terminating in the other ofsaid chambers; and means passing centrally through said elbow member andengaging said outer tubes for locking said elbow member tosaid outertubes.

2. In combination, an elbow member provided with a pair of chambers; apair of outer tubes terminating in one of said chambers; a pair of innertubes passing through said outer tubes and terminating in the other ofsaid chambers; and a single bolt passing through said elbow member andengaging said outer tubes for locking said elbow member and said outertubes together.

In combination, a plurality of heads disposed one above the other andcomprising contacting flanges, each flange being provided at oppositeends with a slot adjacent respectively to a slot of the adjacent head;and clamping bolts passing through said perforations and recess forclamping the heads together; and tubes supported by said heads. a

4. In combination, a pair of outer tubes; a pair of inner tubes passingthrough the outer tubes; a head provided with openings receiving theends of the outer tubes; a cap; means disposed between the cap and thehead for receiving the ends of the inner parallel to tubes and formingwith the head and the cap inner andouter chambers respectivelyestablishing communication between the outer tubes-and between the innertubes; and a bolt passing through said head, means and cap, and lockingthem together.

5. In combination, a pair of outer tubes provided with shoulders; a pairof inner tubes passing through the outer tubes; a head provided withopenings 'receiving'the ends of'the outer tubes; a cap; means dis posedbetween the cap and'the head for receiving the ends of theinner tubesandforming with the head and the cap inner and outer chambers respectivelyestablish ing communication between the outer tubes and between theinner tubes; and -a bolt passing through said head, means andcap, andlocking them together "and engaging said shoulders.

6. In combination, a pair of outer tubes; a pair of inner tubes passingthrough the outer tubes; a head provided with openings receiving theends of the outer tubes; a cap; means disposed between the cap and thehead for receiving the ends of the inner tubes and forming withthe headand the capinner and outer chamber respectively establishingcommunication. between the outer tubes and between the innertubes; abolt passing through said head, meansand cap, and locking them together;and packings' surrounding said bolt and disposed between said means and'said head.

7. In combination, a pair of outertubes; a pair of inner tubes passingthrough the outer tubes; a head provided with openings receiving theends of the outer tubes; a cap; means disposed between'the cap and thehead for receiving the ends of the inner tubes and forming with the headand the cap inner and outer chambers respectively establishingcommunication between the outer tubes'and between the innertubes; a boltpassing through said head, means and cap, and locking them together; anut on said bolt clamping said means to said head; 7

throughsaid head,.means and cap, and look ing them together; a nut onsaid bolt clamping'saidmeans to saidzhead; and a nuton saidbolticlamping saidcap to said meansli 9. In combination, a pair'of outertubes; an inner tube disposed concentrically in each outer tube; a headprovided with openings receiving the ends of the outer tubes; an innerring disposed on said head and forming an inner chamber establishingcommunication between the outer tubes, said ring being provided with apair of openings receiving the end portions of the inner tubes; an

outer ring receiving the ends of the inner tubes; a cap on the outerface of the outer ring and forming an outer chamber establishingcommunication between the inner tubes; and a bolt passing through saidcap, rings and head and clamping them together and to the outer tubes.

10. In combination, a pair of outer tubes provided with opposed lugs; aninner tube disposed concentrically in each outer tube; a head providedwith countersunk openings receiving the ends of the outer tubes, and acentral bore surrounded by an outwardly extending boss; an inner chamberring disposed against the outer face of the head and forming therewithan inner chamber establishing communication between the outer tubes,said ring being provided with a pair of openings snugly receiving theends of the inner tubes, and with a central bore surrounded by aninwardly extending boss; an outer ring provided with a pair of eccentrictubular projections receiving the ends of said inner tubes, and with acentral opening surrounded by a shoulder; a cap engaging over the outerface of the outer ring and provided with a central opening; a boltengaging said lugs and passing through said bores and central openings;a nut on said bolt and engaging said shoulder; and a nut on the boltengaging said cap.

11. In combination, a plurality of tubes; heads supporting said tubesand each provided with slots disposed parallel to the tubes; and boltsdisposed in said slots and securing said heads' together.

12. In combination, a plurality of tubes; heads supporting said tubesand each provided with longitudinal slots; and bolts disposed in saidslots and securing said heads together and permitting relative movementbetween the heads and relative expansion of each provided with flangesprovided with longitudinal slots, the slots of one head registering withslots of the adjacent head;

and bolts disposed in said slots and securing said heads together andpermitting relative movement between the heads in the direction of thetubes.

14:. In combination, a plurality of tubes; heads supporting said tubesand each provided with flanges provided with open ended slots disposedparallel to the tubes, the slots of one head registering with slots ofthe ad j acent head; and bolts disposed in said slots and securingsaidheads together.

15. In combination, a plurality of tubes; heads supporting said tubesand each provided with flanges provided with longitudinal open endedslots disposed longitudinally of the tubes; and bolts disposed in saidslots and securing said heads together.

16. In combination, a plurality of tubes; heads supporting said tubesand each provided with slots, the slots of one head registering withslots of the adjacent head; and bolts disposed in said slots andsecuring said heads together and permitting relative movement betweenthe heads in a direction longitudinal to the tubes and expansion of thetubes.

17. In combination, a plurality of tubes; superposed heads supportingsaid tubes and each provided with flanges provided with longitudinalopen ended slots, the slots of one head registering with slots of theadjacent head; and bolts disposed in said slots and securing said headstogether and permitting relative movement between the heads and relativeexpansion of the tubes.

18. In combination, a pair of outer tubes provided with opposed lugs; aninner tube disposed concentrically in each outer tube; a head providedwith openings receiving the outer tubes; an inner chamber ring pressedagainst said head and forming an inner chamber therewith and providedalso with a pair of openings receiving the ends of the inner tubes; anouter chamber ring disposed against the inner chamber ring and formingan outer chamber therewith establishing communication between the innertubes; a cap on the outer chamber ring; and a bolt engaging said lugsand passing centrally through said head, rings and cap and clamping themtogether.

EMIL BEHRINGER.

Witnesses:

H. M. KILPATRIGK, H.-I. SIEGEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

